x402 tools

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://x402-tools-production-2755.up.railway.app/tools

• GET/token-price$0.002Use to price a crypto portfolio or watchlist in one call. Market data for up to 50 symbols or 250 CoinGecko ids: price, 1h/24h/7d/30d change, 24h high/low, volume, market cap, rank, FDV, supply, and distance from all-time high/low; optional 7-day sparkline. One flat price per call; not charged if nothing is found.
• GET/sanctions$0.005Use before sending funds to check that a recipient isn't sanctioned. Screens up to 50 crypto addresses (ETH/EVM, BTC, TRX, USDT, SOL and more) against the addresses on the US Treasury OFAC SDN list, refreshed daily, returning the sanctioned entity, programs and listing date. Exact-address match only: not a full compliance screen.
• GET/hackernews$0.002Hacker News search, front page, and discussion reader. Search stories, view the front page, or read full comment threads (?id=...) with cleaned discussion text and replies for sentiment and tech research. Optional include_comments=true on search. Flat $0.002.
• GET/dex-price$0.002Use to price tokens by contract address, including long-tail tokens with no CoinGecko listing. Live DEX price, 24h change, volume, liquidity and market cap for up to 30 tokens per call on ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, solana. One flat price per call; not charged if no address has a price.
• GET/markdown$0.002Use when an agent needs to read web pages: clean markdown plus rich page metadata (title, description, OG image, canonical URL, author, reading time). Supports max_length. $0.002 per URL; pass up to 10 comma-separated URLs in 'urls' for batched calls. Not charged if all fail.
• POST/statute-verify$0.01Use to catch hallucinated or repealed statute citations in a brief, memo or AI answer. Finds up to 25 US statute citations in text, checks each exists and is in force, and checks quoted passages against the section. Not charged if none are found. Data: Open US Law v2026.08 (CC BY 4.0). Not legal advice.
• GET/statute-lookup$0.003Use to check one US statute citation before relying on it. Returns whether the section exists, is in force or repealed, its heading, full text and official source link. 48 states, DC and the US Code. Data: Open US Law v2026.08 (CC BY 4.0). Not legal advice.
• GET/domain$0.002Use to vet a domain or URL before trusting it, or to check if a name is available. Registry RDAP data (the WHOIS successor) for up to 20 domains per call: registrar, created/expiry dates, age in days, status and transfer lock, nameservers, DNSSEC. Subdomains resolve to their registered domain. One flat price per call.
• GET/metadata$0.002Extract page metadata for 1-10 URLs: title, description, Open Graph and Twitter card tags, icons, language, theme color, and canonical URL. Pass 'url' or 'urls' (batch up to 10). Flat $0.002 per call.
• GET/liquidations$0.02Use before opening, sizing or hedging a Hyperliquid perp to see where leveraged positions get liquidated. Liquidation levels for one coin, bucketed by price, from the open positions of the most active accounts (measured, not modelled): volume within 5%/10% of the mark, biggest clusters, largest positions, open-interest coverage.
• GET/gas$0.002Use before sending an EVM transaction to pick the cheapest chain and set its fees. Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon and BSC: slow/standard/fast EIP-1559 fee tiers (priority fee, maxFee) from recent blocks, plus the USD cost of a transfer, ERC-20 transfer and swap per tier, cheapest chain first.
• GET/qr$0.002Generate QR codes for text, URLs, or Web3 payment requests (EIP-681 / Solana Pay). Supports PNG, SVG, JSON output with dataUri, custom colors, and batching. Flat $0.002 per call.
• GET/wallet$0.002Resolve an address or ENS name and return ETH and USDC balances and tx counts on Ethereum and Base.

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Showing 13 of 13 listed endpoints.